includes/SpecialDisambiguations.php

   1 <?php
   2 /**
   3  *
   4  * @package MediaWiki
   5  * @subpackage SpecialPage
   6  */
   7
   8 /**
   9  *
  10  * @package MediaWiki
  11  * @subpackage SpecialPage
  12  */
  13 class DisambiguationsPage extends PageQueryPage {
  14
  15         function getName() {
  16                 return 'Disambiguations';
  17         }
  18
  19         function isExpensive( ) { return true; }
  20         function isSyndicated() { return false; }
  21
  22     function getDisambiguationPageObj() {
  23         return Title::makeTitleSafe( NS_MEDIAWIKI, 'disambiguationspage');
  24     }
  25
  26         function getPageHeader( ) {
  27                 global $wgUser;
  28                 $sk = $wgUser->getSkin();
  29
  30                 return '<p>'.wfMsg('disambiguationstext', $sk->makeKnownLinkObj($this->getDisambiguationPageObj()))."</p><br />\n";
  31         }
  32
  33         function getSQL() {
  34                 $dbr =& wfGetDB( DB_SLAVE );
  35                 extract( $dbr->tableNames( 'page', 'pagelinks', 'templatelinks' ) );
  36
  37         $dMsgText = wfMsgForContent('disambiguationspage');
  38
  39                 $linkBatch = new LinkBatch;
  40
  41         # If the text can be treated as a title, use it verbatim.
  42         # Otherwise, pull the titles from the links table
  43         $dp = Title::newFromText($dMsgText);
  44         if( $dp ) {
  45                 if($dp->getNamespace() != NS_TEMPLATE) {
  46                         # FIXME we assume the disambiguation message is a template but
  47                         # the page can potentially be from another namespace :/
  48                         wfDebug("Mediawiki:disambiguationspage message does not refer to a template!\n");
  49                 }
  50             $linkBatch->addObj( $dp );
  51         } else {
  52             # Get all the templates linked from the Mediawiki:Disambiguationspage
  53             $disPageObj = $this->getDisambiguationPageObj();
  54                         $res = $dbr->select(
  55                                 array('pagelinks', 'page'),
  56                                 'pl_title',
  57                                 array('page_id = pl_from', 'pl_namespace' => NS_TEMPLATE,
  58                       'page_namespace' => $disPageObj->getNamespace(), 'page_title' => $disPageObj->getDBkey()),
  59                                 'DisambiguationsPage::getSQL' );
  60
  61                 while ( $row = $dbr->fetchObject( $res ) ) {
  62                 $linkBatch->addObj( Title::makeTitle( NS_TEMPLATE, $row->pl_title ));
  63             }
  64                 $dbr->freeResult( $res );
  65         }
  66
  67         $set = $linkBatch->constructSet( 'lb.tl', $dbr );
  68         if( $set === false ) {
  69             $set = 'FALSE';  # We must always return a valid sql query, but this way DB will always quicly return an empty result
  70             wfDebug("Mediawiki:disambiguationspage message does not link to any templates!\n");
  71         }
  72
  73         $sql = "SELECT 'Disambiguations' AS \"type\", pb.page_namespace AS namespace,"
  74              ." pb.page_title AS title, la.pl_from AS value"
  75              ." FROM {$templatelinks} AS lb, {$page} AS pb, {$pagelinks} AS la, {$page} AS pa"
  76              ." WHERE $set"  # disambiguation template(s)
  77              .' AND pa.page_id = la.pl_from'
  78              .' AND pa.page_namespace = ' . NS_MAIN  # Limit to just articles in the main namespace
  79              .' AND pb.page_id = lb.tl_from'
  80              .' AND pb.page_namespace = la.pl_namespace'
  81              .' AND pb.page_title = la.pl_title';
  82
  83         return $sql;
  84         }
  85
  86         function getOrder() {
  87                 return '';
  88         }
  89
  90         function formatResult( $skin, $result ) {
  91                 global $wgContLang;
  92                 $title = Title::newFromId( $result->value );
  93                 $dp = Title::makeTitle( $result->namespace, $result->title );
  94
  95                 $from = $skin->makeKnownLinkObj( $title,'');
  96                 $edit = $skin->makeBrokenLinkObj( $title, "(".wfMsg("qbedit").")" , 'redirect=no');
  97                 $arr  = $wgContLang->getArrow();
  98                 $to   = $skin->makeKnownLinkObj( $dp,'');
  99
 100                 return "$from $edit $arr $to";
 101         }
 102 }
 103
 104 /**
 105  * Constructor
 106  */
 107 function wfSpecialDisambiguations() {
 108         list( $limit, $offset ) = wfCheckLimits();
 109
 110         $sd = new DisambiguationsPage();
 111
 112         return $sd->doQuery( $offset, $limit );
 113 }
 114 ?>